Lau effect in GRIN media

M. C. Garcia-Allegue; D. Nieto; M. T. Flores-Arias; C. Gómez-Reino

doi:10.1117/12.622172

30 September 2005 Lau effect in GRIN media

M. C. Garcia-Allegue, D. Nieto, M. T. Flores-Arias, C. Gómez-Reino

Proceedings Volume 5956, Integrated Optics: Theory and Applications; 595614 (2005) https://doi.org/10.1117/12.622172
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

Abstract

The Lau effect refers to interference phenomenon involving double-grating system illuminated by an extended white light source and it has received wide attention. Until now, the Lau effect has been studied regarding double-grating system immersed in homogenous media. A generalization of Lau effect to the case of a GRIN medium is considered. We present an explanation based on the coherence theory. We begin the analysis by describing, in general terms, the propagation of the second-order field correlations in GRIN media, via the cross-spectral density function. This provides the basics for discussing the evolution of the intensity distribution and the cross-spectral density function of the field incident on the second grating. The particular case of a selfoc GRIN medium and two sinusoidal gratings is analyzed.

Citation Download Citation

M. C. Garcia-Allegue, D. Nieto, M. T. Flores-Arias, and C. Gómez-Reino "Lau effect in GRIN media", Proc. SPIE 5956, Integrated Optics: Theory and Applications, 595614 (30 September 2005); https://doi.org/10.1117/12.622172

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